Edited by Flurina and Gianni Paravicini-Tönz. With texts by Jean-Christophe Ammann, Peter Noever, Adalsteinn Ingolfson and an interview with Hans Langenbacher.

The publication depicts the thirty-year collaboration and friendship between the artist Dieter Roth and the goldsmith Hans Langenbacher using 80 facsimiled original documents (plans, sketches, drawings, letters and postcards).